CVE-2024-50231 (GCVE-0-2024-50231)

Vulnerability from cvelistv5 – Published: 2024-11-09 10:14 – Updated: 2025-10-01 20:17
VLAI?
Title
iio: gts-helper: Fix memory leaks in iio_gts_build_avail_scale_table()
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: gts-helper: Fix memory leaks in iio_gts_build_avail_scale_table() modprobe iio-test-gts and rmmod it, then the following memory leak occurs: unreferenced object 0xffffff80c810be00 (size 64): comm "kunit_try_catch", pid 1654, jiffies 4294913981 hex dump (first 32 bytes): 02 00 00 00 08 00 00 00 20 00 00 00 40 00 00 00 ........ ...@... 80 00 00 00 00 02 00 00 00 04 00 00 00 08 00 00 ................ backtrace (crc a63d875e): [<0000000028c1b3c2>] kmemleak_alloc+0x34/0x40 [<000000001d6ecc87>] __kmalloc_noprof+0x2bc/0x3c0 [<00000000393795c1>] devm_iio_init_iio_gts+0x4b4/0x16f4 [<0000000071bb4b09>] 0xffffffdf052a62e0 [<000000000315bc18>] 0xffffffdf052a6488 [<00000000f9dc55b5>] kunit_try_run_case+0x13c/0x3ac [<00000000175a3fd4>] kunit_generic_run_threadfn_adapter+0x80/0xec [<00000000f505065d>] kthread+0x2e8/0x374 [<00000000bbfb0e5d>] ret_from_fork+0x10/0x20 unreferenced object 0xffffff80cbfe9e70 (size 16): comm "kunit_try_catch", pid 1658, jiffies 4294914015 hex dump (first 16 bytes): 10 00 00 00 40 00 00 00 80 00 00 00 00 00 00 00 ....@........... backtrace (crc 857f0cb4): [<0000000028c1b3c2>] kmemleak_alloc+0x34/0x40 [<000000001d6ecc87>] __kmalloc_noprof+0x2bc/0x3c0 [<00000000393795c1>] devm_iio_init_iio_gts+0x4b4/0x16f4 [<0000000071bb4b09>] 0xffffffdf052a62e0 [<000000007d089d45>] 0xffffffdf052a6864 [<00000000f9dc55b5>] kunit_try_run_case+0x13c/0x3ac [<00000000175a3fd4>] kunit_generic_run_threadfn_adapter+0x80/0xec [<00000000f505065d>] kthread+0x2e8/0x374 [<00000000bbfb0e5d>] ret_from_fork+0x10/0x20 ...... It includes 5*5 times "size 64" memory leaks, which correspond to 5 times test_init_iio_gain_scale() calls with gts_test_gains size 10 (10*size(int)) and gts_test_itimes size 5. It also includes 5*1 times "size 16" memory leak, which correspond to one time __test_init_iio_gain_scale() call with gts_test_gains_gain_low size 3 (3*size(int)) and gts_test_itimes size 5. The reason is that the per_time_gains[i] is not freed which is allocated in the "gts->num_itime" for loop in iio_gts_build_avail_scale_table().
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 38416c28e16890b52fdd5eb73479299ec3f062f3 , < 38d6e8be234d87b0eedca50309e25051888b39d1 (git)
Affected: 38416c28e16890b52fdd5eb73479299ec3f062f3 , < 16e41593825c3044efca0eb34b2d6ffba306e4ec (git)
Affected: 38416c28e16890b52fdd5eb73479299ec3f062f3 , < 691e79ffc42154a9c91dc3b7e96a307037b4be74 (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.60 , ≤ 6.6.* (semver)
Unaffected: 6.11.7 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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    "dateUpdated": "2025-10-01T20:17:27.616Z",
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\"https://git.kernel.org/stable/c/691e79ffc42154a9c91dc3b7e96a307037b4be74\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niio: gts-helper: Fix memory leaks in iio_gts_build_avail_scale_table()\\n\\nmodprobe iio-test-gts and rmmod it, then the following memory leak\\noccurs:\\n\\n\\tunreferenced object 0xffffff80c810be00 (size 64):\\n\\t  comm \\\"kunit_try_catch\\\", pid 1654, jiffies 4294913981\\n\\t  hex dump (first 32 bytes):\\n\\t    02 00 00 00 08 00 00 00 20 00 00 00 40 00 00 00  ........ ...@...\\n\\t    80 00 00 00 00 02 00 00 00 04 00 00 00 08 00 00  ................\\n\\t  backtrace (crc a63d875e):\\n\\t    [\u003c0000000028c1b3c2\u003e] kmemleak_alloc+0x34/0x40\\n\\t    [\u003c000000001d6ecc87\u003e] __kmalloc_noprof+0x2bc/0x3c0\\n\\t    [\u003c00000000393795c1\u003e] devm_iio_init_iio_gts+0x4b4/0x16f4\\n\\t    [\u003c0000000071bb4b09\u003e] 0xffffffdf052a62e0\\n\\t    [\u003c000000000315bc18\u003e] 0xffffffdf052a6488\\n\\t    [\u003c00000000f9dc55b5\u003e] kunit_try_run_case+0x13c/0x3ac\\n\\t    [\u003c00000000175a3fd4\u003e] kunit_generic_run_threadfn_adapter+0x80/0xec\\n\\t    [\u003c00000000f505065d\u003e] kthread+0x2e8/0x374\\n\\t    [\u003c00000000bbfb0e5d\u003e] ret_from_fork+0x10/0x20\\n\\tunreferenced object 0xffffff80cbfe9e70 (size 16):\\n\\t  comm \\\"kunit_try_catch\\\", pid 1658, jiffies 4294914015\\n\\t  hex dump (first 16 bytes):\\n\\t    10 00 00 00 40 00 00 00 80 00 00 00 00 00 00 00  ....@...........\\n\\t  backtrace (crc 857f0cb4):\\n\\t    [\u003c0000000028c1b3c2\u003e] kmemleak_alloc+0x34/0x40\\n\\t    [\u003c000000001d6ecc87\u003e] __kmalloc_noprof+0x2bc/0x3c0\\n\\t    [\u003c00000000393795c1\u003e] devm_iio_init_iio_gts+0x4b4/0x16f4\\n\\t    [\u003c0000000071bb4b09\u003e] 0xffffffdf052a62e0\\n\\t    [\u003c000000007d089d45\u003e] 0xffffffdf052a6864\\n\\t    [\u003c00000000f9dc55b5\u003e] kunit_try_run_case+0x13c/0x3ac\\n\\t    [\u003c00000000175a3fd4\u003e] kunit_generic_run_threadfn_adapter+0x80/0xec\\n\\t    [\u003c00000000f505065d\u003e] kthread+0x2e8/0x374\\n\\t    [\u003c00000000bbfb0e5d\u003e] ret_from_fork+0x10/0x20\\n\\t......\\n\\nIt includes 5*5 times \\\"size 64\\\" memory leaks, which correspond to 5 times\\ntest_init_iio_gain_scale() calls with gts_test_gains size 10 (10*size(int))\\nand gts_test_itimes size 5. It also includes 5*1 times \\\"size 16\\\"\\nmemory leak, which correspond to one time __test_init_iio_gain_scale()\\ncall with gts_test_gains_gain_low size 3 (3*size(int)) and gts_test_itimes\\nsize 5.\\n\\nThe reason is that the per_time_gains[i] is not freed which is allocated in\\nthe \\\"gts-\u003enum_itime\\\" for loop in iio_gts_build_avail_scale_table().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.60\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.7\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:49:18.349Z\"}}}",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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